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Surface solar ultraviolet irradiance and total ozone during summertime

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An anticorrelation between total ozone and UV-B radiation was observed in Athens, Greece (35.59° N, 23.44° E) for clear-sky conditions during the summertime period 1993-2006. The UV-B radiation (290-320 nm) was measured using a UV-B pyranometer, and the total ozone column data were obtained using the Dobson No. 118 spectrophotometer. In addition, a parametric model has been used for the calculation of the direct and diffuse solar ultraviolet radiation reaching the Earth's surface. Finally, the total ozone observations made by the satellite-borne instrument Scanning Imaging Absorption Spectrometer for Atmospheric Chartography were used in order to confirm the results obtained from the Dobson measurements. The main finding which stems from these data is that there is no significant seasonality in the radiation amplification factor of UV-B, broadband UV, and the erythemally weighted UV, whereas the enhanced UV-B generates intensive air-pollution episodes, which subsequently attenuate the surface UV-B irradiance. Furthermore, these findings may be used for the prediction of the propagation parameters of the microwaves, mm-waves and optical telecommunication signals over the Athens Metropolitan Area.
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Document Type: Research Article

Affiliations: 1: Department of Applied Physics, University of Athens, 15784, Athens, Greece 2: Department of Energy Technology, Technological Education Institute of Athens, 12210, Athens, Greece 3: Department of Electronics, Technological Education Institution of Piraeus, Aigaleo-12244, Greece

Publication date: May 1, 2008

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